#603E7D
Closest named color: Dark Slate Blue (#483D8B). oklch(43.2% 0.106 307.4), rgb(96, 62, 125).
Aa
White text reads best on this color (8.45:1).
About this color
#603E7D is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.106 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.050 away. White text reads best on it, at 8.45:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.48:1 |
| White text | 8.45:1 |
Values
| HEX | #603E7D |
| RGB | rgb(96, 62, 125) |
| HSL | hsl(272, 34%, 37%) |
| OKLCH | oklch(43.2% 0.106 307.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #603E7D | 8.45:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #603E7D | 2.48:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #603E7D text on white | 8.45:1 | AAA | Lc 88.9 | Fine for body text |
| #603E7D text on black | 2.48:1 | Fails | Lc -13.3 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#DFD4EB
oklch(88.6% 0.033 307.1)
-
Step 300
300
#CBB7E0
oklch(81% 0.061 307.1)
-
Step 400
400
#B190D1
oklch(70.7% 0.099 307.2)
-
Step 500
500
#9E73C5
oklch(63.1% 0.127 307.3)
-
Step 600
600
#895AB1
oklch(55.6% 0.138 307.4)
-
Step 700
700
#744998
oklch(49% 0.129 307.4)
-
Step 800
800 (this color)
#603E7D
oklch(43.2% 0.106 307.4)
-
Step 900
900
#4D3463
oklch(37.6% 0.083 307.4)
-
Step 950
950
#2D1F3A
oklch(27% 0.052 307.1)
#603E7D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2D4C7F | 0.082 |
| Deuteranopia (no green cones) | #374D7B | 0.074 |
| Tritanopia (no blue cones) | #5C4957 | 0.078 |
| Achromatopsia (no color) | #4D4D4D | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603E7D
#603E7D
oklch(43.2% 0.106 307.4)
- #405A0A
#405A0A
oklch(43.1% 0.106 127.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #603E7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.050
- Rebecca Purple #663399 ΔE 0.055
- Twilight #4E518B ΔE 0.057
- Blueberry #464196 ΔE 0.061
- Dusk #4E5481 ΔE 0.064
- Dusty Grape #545775 ΔE 0.076
- Light Eggplant #894585 ΔE 0.083
- Denim Blue #3B5B92 ΔE 0.091
Use #603E7D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.